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NetBSD/sys/dev/acpi/acpi_bat.c

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/* $NetBSD: acpi_bat.c,v 1.65 2008/03/23 16:12:45 xtraeme Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum of By Noon Software, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright 2001 Bill Sommerfeld.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if 0
#define ACPI_BAT_DEBUG
#endif
/*
* ACPI Battery Driver.
*
* ACPI defines two different battery device interfaces: "Control
* Method" batteries, in which AML methods are defined in order to get
* battery status and set battery alarm thresholds, and a "Smart
* Battery" device, which is an SMbus device accessed through the ACPI
* Embedded Controller device.
*
* This driver is for the "Control Method"-style battery only.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_bat.c,v 1.65 2008/03/23 16:12:45 xtraeme Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h> /* for hz */
#include <sys/device.h>
#include <sys/mutex.h>
#include <dev/sysmon/sysmonvar.h>
#include <dev/acpi/acpica.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
/* sensor indexes */
#define ACPIBAT_PRESENT 0
#define ACPIBAT_DCAPACITY 1
#define ACPIBAT_LFCCAPACITY 2
#define ACPIBAT_TECHNOLOGY 3
#define ACPIBAT_DVOLTAGE 4
#define ACPIBAT_WCAPACITY 5
#define ACPIBAT_LCAPACITY 6
#define ACPIBAT_VOLTAGE 7
#define ACPIBAT_CHARGERATE 8
#define ACPIBAT_DISCHARGERATE 9
#define ACPIBAT_CAPACITY 10
#define ACPIBAT_CHARGING 11
#define ACPIBAT_CHARGE_STATE 12
#define ACPIBAT_NSENSORS 13 /* number of sensors */
struct acpibat_softc {
struct acpi_devnode *sc_node; /* our ACPI devnode */
int sc_flags; /* see below */
int sc_available; /* available information level */
struct sysmon_envsys *sc_sme;
envsys_data_t sc_sensor[ACPIBAT_NSENSORS];
kmutex_t sc_mtx;
struct timeval sc_lastupdate, sc_updateinterval;
};
static const char * const bat_hid[] = {
"PNP0C0A",
NULL
};
/*
* These flags are used to examine the battery device data returned from
* the ACPI interface, specifically the "battery status"
*/
#define ACPIBAT_PWRUNIT_MA 0x00000001 /* mA not mW */
/*
* These flags are used to examine the battery charge/discharge/critical
* state returned from a get-status command.
*/
#define ACPIBAT_ST_DISCHARGING 0x00000001 /* battery is discharging */
#define ACPIBAT_ST_CHARGING 0x00000002 /* battery is charging */
#define ACPIBAT_ST_CRITICAL 0x00000004 /* battery is critical */
/*
* Flags for battery status from _STA return
*/
#define ACPIBAT_STA_PRESENT 0x00000010 /* battery present */
/*
* These flags are used to set internal state in our softc.
*/
#define ABAT_F_VERBOSE 0x01 /* verbose events */
#define ABAT_F_PWRUNIT_MA 0x02 /* mA instead of mW */
#define ABAT_F_PRESENT 0x04 /* is the battery present? */
#define ABAT_SET(sc, f) (void)((sc)->sc_flags |= (f))
#define ABAT_CLEAR(sc, f) (void)((sc)->sc_flags &= ~(f))
#define ABAT_ISSET(sc, f) ((sc)->sc_flags & (f))
/*
* Available info level
*/
#define ABAT_ALV_NONE 0 /* none is available */
#define ABAT_ALV_PRESENCE 1 /* presence info is available */
#define ABAT_ALV_INFO 2 /* battery info is available */
#define ABAT_ALV_STAT 3 /* battery status is available */
static int acpibat_match(device_t, struct cfdata *, void *);
static void acpibat_attach(device_t, struct device *, void *);
CFATTACH_DECL_NEW(acpibat, sizeof(struct acpibat_softc),
acpibat_match, acpibat_attach, NULL, NULL);
static void acpibat_clear_presence(struct acpibat_softc *);
static void acpibat_clear_info(struct acpibat_softc *);
static void acpibat_clear_stat(struct acpibat_softc *);
static int acpibat_battery_present(device_t);
static ACPI_STATUS acpibat_get_status(device_t);
static ACPI_STATUS acpibat_get_info(device_t);
static void acpibat_print_info(device_t);
static void acpibat_print_stat(device_t);
static void acpibat_update(void *);
static void acpibat_init_envsys(device_t);
static void acpibat_notify_handler(ACPI_HANDLE, UINT32, void *);
static void acpibat_refresh(struct sysmon_envsys *, envsys_data_t *);
/*
* acpibat_match:
*
* Autoconfiguration `match' routine.
*/
static int
acpibat_match(device_t parent, struct cfdata *match, void *aux)
{
struct acpi_attach_args *aa = aux;
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
return 0;
return acpi_match_hid(aa->aa_node->ad_devinfo, bat_hid);
}
/*
* acpibat_attach:
*
* Autoconfiguration `attach' routine.
*/
static void
acpibat_attach(device_t parent, device_t self, void *aux)
{
struct acpibat_softc *sc = device_private(self);
struct acpi_attach_args *aa = aux;
ACPI_STATUS rv;
aprint_naive(": ACPI Battery (Control Method)\n");
aprint_normal(": ACPI Battery (Control Method)\n");
sc->sc_node = aa->aa_node;
mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE);
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_ALL_NOTIFY,
acpibat_notify_handler, self);
if (ACPI_FAILURE(rv)) {
aprint_error_dev(self,
"unable to register DEVICE/SYSTEM NOTIFY handler: %s\n",
AcpiFormatException(rv));
return;
}
#ifdef ACPI_BAT_DEBUG
ABAT_SET(sc, ABAT_F_VERBOSE);
#endif
if (!pmf_device_register(self, NULL, NULL))
aprint_error_dev(self, "couldn't establish power handler\n");
acpibat_init_envsys(self);
}
/*
* clear informations
*/
static void
acpibat_clear_presence(struct acpibat_softc *sc)
{
acpibat_clear_info(sc);
sc->sc_available = ABAT_ALV_NONE;
ABAT_CLEAR(sc, ABAT_F_PRESENT);
}
static void
acpibat_clear_info(struct acpibat_softc *sc)
{
acpibat_clear_stat(sc);
if (sc->sc_available > ABAT_ALV_PRESENCE)
sc->sc_available = ABAT_ALV_PRESENCE;
sc->sc_sensor[ACPIBAT_DCAPACITY].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_LFCCAPACITY].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_CAPACITY].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_TECHNOLOGY].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_DVOLTAGE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_WCAPACITY].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_LCAPACITY].state = ENVSYS_SINVALID;
}
static void
acpibat_clear_stat(struct acpibat_softc *sc)
{
if (sc->sc_available > ABAT_ALV_INFO)
sc->sc_available = ABAT_ALV_INFO;
sc->sc_sensor[ACPIBAT_CHARGERATE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_DISCHARGERATE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_CAPACITY].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_VOLTAGE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_CHARGING].state = ENVSYS_SINVALID;
}
/*
* returns 0 for no battery, 1 for present, and -1 on error
*/
static int
acpibat_battery_present(device_t dv)
{
struct acpibat_softc *sc = device_private(dv);
uint32_t sta;
ACPI_INTEGER val;
ACPI_STATUS rv;
rv = acpi_eval_integer(sc->sc_node->ad_handle, "_STA", &val);
if (ACPI_FAILURE(rv)) {
aprint_error_dev(dv, "failed to evaluate _STA: %s\n",
AcpiFormatException(rv));
return -1;
}
sta = (uint32_t)val;
mutex_enter(&sc->sc_mtx);
sc->sc_available = ABAT_ALV_PRESENCE;
if (sta & ACPIBAT_STA_PRESENT) {
ABAT_SET(sc, ABAT_F_PRESENT);
sc->sc_sensor[ACPIBAT_PRESENT].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_PRESENT].value_cur = 1;
} else
sc->sc_sensor[ACPIBAT_PRESENT].value_cur = 0;
mutex_exit(&sc->sc_mtx);
return (sta & ACPIBAT_STA_PRESENT) ? 1 : 0;
}
/*
* acpibat_get_info
*
* Get, and possibly display, the battery info.
*/
static ACPI_STATUS
acpibat_get_info(device_t dv)
{
struct acpibat_softc *sc = device_private(dv);
ACPI_OBJECT *p1, *p2;
ACPI_STATUS rv;
ACPI_BUFFER buf;
int capunit, rateunit;
rv = acpi_eval_struct(sc->sc_node->ad_handle, "_BIF", &buf);
if (ACPI_FAILURE(rv)) {
aprint_error_dev(dv, "failed to evaluate _BIF: %s\n",
AcpiFormatException(rv));
return rv;
}
p1 = (ACPI_OBJECT *)buf.Pointer;
if (p1->Type != ACPI_TYPE_PACKAGE) {
aprint_error_dev(dv, "expected PACKAGE, got %d\n", p1->Type);
goto out;
}
if (p1->Package.Count < 13) {
aprint_error_dev(dv, "expected 13 elements, got %d\n",
p1->Package.Count);
goto out;
}
p2 = p1->Package.Elements;
mutex_enter(&sc->sc_mtx);
if ((p2[0].Integer.Value & ACPIBAT_PWRUNIT_MA) != 0) {
ABAT_SET(sc, ABAT_F_PWRUNIT_MA);
capunit = ENVSYS_SAMPHOUR;
rateunit = ENVSYS_SAMPS;
} else {
ABAT_CLEAR(sc, ABAT_F_PWRUNIT_MA);
capunit = ENVSYS_SWATTHOUR;
rateunit = ENVSYS_SWATTS;
}
sc->sc_sensor[ACPIBAT_DCAPACITY].units = capunit;
sc->sc_sensor[ACPIBAT_LFCCAPACITY].units = capunit;
sc->sc_sensor[ACPIBAT_WCAPACITY].units = capunit;
sc->sc_sensor[ACPIBAT_LCAPACITY].units = capunit;
sc->sc_sensor[ACPIBAT_CHARGERATE].units = rateunit;
sc->sc_sensor[ACPIBAT_DISCHARGERATE].units = rateunit;
sc->sc_sensor[ACPIBAT_CAPACITY].units = capunit;
sc->sc_sensor[ACPIBAT_DCAPACITY].value_cur = p2[1].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_DCAPACITY].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_LFCCAPACITY].value_cur = p2[2].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_LFCCAPACITY].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_CAPACITY].value_max = p2[2].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_TECHNOLOGY].value_cur = p2[3].Integer.Value;
sc->sc_sensor[ACPIBAT_TECHNOLOGY].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_DVOLTAGE].value_cur = p2[4].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_DVOLTAGE].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_WCAPACITY].value_cur = p2[5].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_WCAPACITY].value_max = p2[2].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_WCAPACITY].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_WCAPACITY].flags |=
(ENVSYS_FPERCENT|ENVSYS_FVALID_MAX);
sc->sc_sensor[ACPIBAT_LCAPACITY].value_cur = p2[6].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_LCAPACITY].value_max = p2[2].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_LCAPACITY].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_LCAPACITY].flags |=
(ENVSYS_FPERCENT|ENVSYS_FVALID_MAX);
sc->sc_available = ABAT_ALV_INFO;
mutex_exit(&sc->sc_mtx);
aprint_verbose_dev(dv, "battery info: %s, %s, %s",
p2[12].String.Pointer, p2[11].String.Pointer, p2[9].String.Pointer);
if (p2[10].String.Pointer)
aprint_verbose(" %s", p2[10].String.Pointer);
aprint_verbose("\n");
rv = AE_OK;
out:
AcpiOsFree(buf.Pointer);
return rv;
}
/*
* acpibat_get_status:
*
* Get, and possibly display, the current battery line status.
*/
static ACPI_STATUS
acpibat_get_status(device_t dv)
{
struct acpibat_softc *sc = device_private(dv);
int status, battrate;
ACPI_OBJECT *p1, *p2;
ACPI_STATUS rv;
ACPI_BUFFER buf;
rv = acpi_eval_struct(sc->sc_node->ad_handle, "_BST", &buf);
if (ACPI_FAILURE(rv)) {
aprint_error_dev(dv, "failed to evaluate _BST: %s\n",
AcpiFormatException(rv));
return rv;
}
p1 = (ACPI_OBJECT *)buf.Pointer;
if (p1->Type != ACPI_TYPE_PACKAGE) {
aprint_error_dev(dv, "expected PACKAGE, got %d\n",
p1->Type);
rv = AE_ERROR;
goto out;
}
if (p1->Package.Count < 4) {
aprint_error_dev(dv, "expected 4 elts, got %d\n",
p1->Package.Count);
rv = AE_ERROR;
goto out;
}
p2 = p1->Package.Elements;
mutex_enter(&sc->sc_mtx);
status = p2[0].Integer.Value;
battrate = p2[1].Integer.Value;
if (status & ACPIBAT_ST_CHARGING) {
sc->sc_sensor[ACPIBAT_CHARGERATE].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_CHARGERATE].value_cur = battrate * 1000;
sc->sc_sensor[ACPIBAT_DISCHARGERATE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_CHARGING].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_CHARGING].value_cur = 1;
} else if (status & ACPIBAT_ST_DISCHARGING) {
sc->sc_sensor[ACPIBAT_DISCHARGERATE].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_DISCHARGERATE].value_cur = battrate * 1000;
sc->sc_sensor[ACPIBAT_CHARGERATE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_CHARGING].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_CHARGING].value_cur = 0;
} else if (!(status & (ACPIBAT_ST_CHARGING|ACPIBAT_ST_DISCHARGING))) {
sc->sc_sensor[ACPIBAT_CHARGING].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_CHARGING].value_cur = 0;
sc->sc_sensor[ACPIBAT_CHARGERATE].state = ENVSYS_SINVALID;
sc->sc_sensor[ACPIBAT_DISCHARGERATE].state = ENVSYS_SINVALID;
}
sc->sc_sensor[ACPIBAT_CHARGE_STATE].value_cur =
ENVSYS_BATTERY_CAPACITY_NORMAL;
sc->sc_sensor[ACPIBAT_CAPACITY].value_cur = p2[2].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_CAPACITY].state = ENVSYS_SVALID;
sc->sc_sensor[ACPIBAT_CAPACITY].flags |=
(ENVSYS_FPERCENT|ENVSYS_FVALID_MAX);
sc->sc_sensor[ACPIBAT_VOLTAGE].value_cur = p2[3].Integer.Value * 1000;
sc->sc_sensor[ACPIBAT_VOLTAGE].state = ENVSYS_SVALID;
if (sc->sc_sensor[ACPIBAT_CAPACITY].value_cur <
sc->sc_sensor[ACPIBAT_WCAPACITY].value_cur) {
sc->sc_sensor[ACPIBAT_CAPACITY].state = ENVSYS_SWARNUNDER;
sc->sc_sensor[ACPIBAT_CHARGE_STATE].value_cur =
ENVSYS_BATTERY_CAPACITY_WARNING;
}
if (sc->sc_sensor[ACPIBAT_CAPACITY].value_cur <
sc->sc_sensor[ACPIBAT_LCAPACITY].value_cur) {
sc->sc_sensor[ACPIBAT_CAPACITY].state = ENVSYS_SCRITUNDER;
sc->sc_sensor[ACPIBAT_CHARGE_STATE].value_cur =
ENVSYS_BATTERY_CAPACITY_LOW;
}
if (status & ACPIBAT_ST_CRITICAL) {
sc->sc_sensor[ACPIBAT_CAPACITY].state = ENVSYS_SCRITICAL;
sc->sc_sensor[ACPIBAT_CHARGE_STATE].value_cur =
ENVSYS_BATTERY_CAPACITY_CRITICAL;
}
mutex_exit(&sc->sc_mtx);
rv = AE_OK;
out:
AcpiOsFree(buf.Pointer);
return rv;
}
#define SCALE(x) ((x)/1000000), (((x)%1000000)/1000)
#define CAPUNITS(sc) (ABAT_ISSET((sc), ABAT_F_PWRUNIT_MA)?"Ah":"Wh")
#define RATEUNITS(sc) (ABAT_ISSET((sc), ABAT_F_PWRUNIT_MA)?"A":"W")
static void
acpibat_print_info(device_t dv)
{
struct acpibat_softc *sc = device_private(dv);
const char *tech;
if (sc->sc_sensor[ACPIBAT_TECHNOLOGY].value_cur)
tech = "secondary";
else
tech = "primary";
aprint_debug_dev(dv, "%s battery, Design %d.%03d%s "
"Last full %d.%03d%s Warn %d.%03d%s Low %d.%03d%s\n",
tech, SCALE(sc->sc_sensor[ACPIBAT_DCAPACITY].value_cur), CAPUNITS(sc),
SCALE(sc->sc_sensor[ACPIBAT_LFCCAPACITY].value_cur),CAPUNITS(sc),
SCALE(sc->sc_sensor[ACPIBAT_WCAPACITY].value_cur), CAPUNITS(sc),
SCALE(sc->sc_sensor[ACPIBAT_LCAPACITY].value_cur), CAPUNITS(sc));
}
static void
acpibat_print_stat(device_t dv)
{
struct acpibat_softc *sc = device_private(dv);
const char *capstat, *chargestat;
int percent, denom;
int32_t value;
percent = 0;
if (sc->sc_sensor[ACPIBAT_CAPACITY].state == ENVSYS_SCRITUNDER)
capstat = "CRITICAL UNDER ";
else if (sc->sc_sensor[ACPIBAT_CAPACITY].state == ENVSYS_SCRITOVER)
capstat = "CRITICAL OVER ";
else
capstat = "";
if (sc->sc_sensor[ACPIBAT_CHARGING].state != ENVSYS_SVALID) {
chargestat = "idling";
value = 0;
} else if (sc->sc_sensor[ACPIBAT_CHARGING].value_cur == 0) {
chargestat = "discharging";
value = sc->sc_sensor[ACPIBAT_DISCHARGERATE].value_cur;
} else {
chargestat = "charging";
value = sc->sc_sensor[ACPIBAT_CHARGERATE].value_cur;
}
denom = sc->sc_sensor[ACPIBAT_LFCCAPACITY].value_cur / 100;
if (denom > 0)
percent = (sc->sc_sensor[ACPIBAT_CAPACITY].value_cur) / denom;
aprint_debug_dev(dv, "%s%s: %d.%03dV cap %d.%03d%s (%d%%) "
"rate %d.%03d%s\n", capstat, chargestat,
SCALE(sc->sc_sensor[ACPIBAT_VOLTAGE].value_cur),
SCALE(sc->sc_sensor[ACPIBAT_CAPACITY].value_cur), CAPUNITS(sc),
percent, SCALE(value), RATEUNITS(sc));
}
static void
acpibat_update(void *arg)
{
device_t dv = arg;
struct acpibat_softc *sc = device_private(dv);
if (sc->sc_available < ABAT_ALV_INFO) {
/* current information is invalid */
#if 0
/*
* XXX: The driver sometimes unaware that the battery exist.
* (i.e. just after the boot or resuming)
* Thus, the driver should always check it here.
*/
if (sc->sc_available < ABAT_ALV_PRESENCE)
#endif
/* presence is invalid */
if (acpibat_battery_present(dv) < 0) {
/* error */
aprint_debug_dev(dv,
"cannot get battery presence.\n");
return;
}
if (ABAT_ISSET(sc, ABAT_F_PRESENT)) {
/* the battery is present. */
if (ABAT_ISSET(sc, ABAT_F_VERBOSE))
aprint_debug_dev(dv,
"battery is present.\n");
if (ACPI_FAILURE(acpibat_get_info(dv)))
return;
if (ABAT_ISSET(sc, ABAT_F_VERBOSE))
acpibat_print_info(dv);
} else {
/* the battery is not present. */
if (ABAT_ISSET(sc, ABAT_F_VERBOSE))
aprint_debug_dev(dv,
"battery is not present.\n");
return;
}
} else {
/* current information is valid */
if (!ABAT_ISSET(sc, ABAT_F_PRESENT)) {
/* the battery is not present. */
return;
}
}
if (ACPI_FAILURE(acpibat_get_status(dv)))
return;
if (ABAT_ISSET(sc, ABAT_F_VERBOSE))
acpibat_print_stat(dv);
}
/*
* acpibat_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
static void
acpibat_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
{
device_t dv = context;
struct acpibat_softc *sc = device_private(dv);
int rv;
#ifdef ACPI_BAT_DEBUG
aprint_debug_dev(dv, "received notify message: 0x%x\n", notify);
#endif
switch (notify) {
case ACPI_NOTIFY_BusCheck:
break;
case ACPI_NOTIFY_DeviceCheck:
case ACPI_NOTIFY_BatteryInformationChanged:
mutex_enter(&sc->sc_mtx);
acpibat_clear_presence(sc);
mutex_exit(&sc->sc_mtx);
rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, acpibat_update, dv);
if (ACPI_FAILURE(rv))
aprint_error_dev(dv,
"unable to queue status check: %s\n",
AcpiFormatException(rv));
break;
case ACPI_NOTIFY_BatteryStatusChanged:
mutex_enter(&sc->sc_mtx);
acpibat_clear_stat(sc);
mutex_exit(&sc->sc_mtx);
rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, acpibat_update, dv);
if (ACPI_FAILURE(rv))
aprint_error_dev(dv,
"unable to queue status check: %s\n",
AcpiFormatException(rv));
break;
default:
aprint_error_dev(dv,
"received unknown notify message: 0x%x\n", notify);
}
}
static void
acpibat_init_envsys(device_t dv)
{
struct acpibat_softc *sc = device_private(dv);
int i, capunit, rateunit;
if (sc->sc_flags & ABAT_F_PWRUNIT_MA) {
capunit = ENVSYS_SAMPHOUR;
rateunit = ENVSYS_SAMPS;
} else {
capunit = ENVSYS_SWATTHOUR;
rateunit = ENVSYS_SWATTS;
}
#define INITDATA(index, unit, string) \
sc->sc_sensor[index].state = ENVSYS_SVALID; \
sc->sc_sensor[index].units = unit; \
strlcpy(sc->sc_sensor[index].desc, string, \
sizeof(sc->sc_sensor[index].desc));
INITDATA(ACPIBAT_PRESENT, ENVSYS_INDICATOR, "present");
INITDATA(ACPIBAT_DCAPACITY, capunit, "design cap");
INITDATA(ACPIBAT_LFCCAPACITY, capunit, "last full cap");
INITDATA(ACPIBAT_TECHNOLOGY, ENVSYS_INTEGER, "technology");
INITDATA(ACPIBAT_DVOLTAGE, ENVSYS_SVOLTS_DC, "design voltage");
INITDATA(ACPIBAT_WCAPACITY, capunit, "warn cap");
INITDATA(ACPIBAT_LCAPACITY, capunit, "low cap");
INITDATA(ACPIBAT_VOLTAGE, ENVSYS_SVOLTS_DC, "voltage");
INITDATA(ACPIBAT_CHARGERATE, rateunit, "charge rate");
INITDATA(ACPIBAT_DISCHARGERATE, rateunit, "discharge rate");
INITDATA(ACPIBAT_CAPACITY, capunit, "charge");
INITDATA(ACPIBAT_CHARGING, ENVSYS_BATTERY_CHARGE, "charging");
INITDATA(ACPIBAT_CHARGE_STATE, ENVSYS_BATTERY_CAPACITY, "charge state");
#undef INITDATA
/* Enable monitoring for the charge state sensor */
sc->sc_sensor[ACPIBAT_CHARGE_STATE].monitor = true;
sc->sc_sensor[ACPIBAT_CHARGE_STATE].flags |= ENVSYS_FMONSTCHANGED;
/* Disable userland monitoring on these sensors */
sc->sc_sensor[ACPIBAT_VOLTAGE].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_CHARGERATE].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_DISCHARGERATE].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_DCAPACITY].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_LFCCAPACITY].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_TECHNOLOGY].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_DVOLTAGE].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_WCAPACITY].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sensor[ACPIBAT_LCAPACITY].flags = ENVSYS_FMONNOTSUPP;
sc->sc_sme = sysmon_envsys_create();
for (i = 0; i < ACPIBAT_NSENSORS; i++) {
if (sysmon_envsys_sensor_attach(sc->sc_sme,
&sc->sc_sensor[i])) {
aprint_error_dev(dv, "unable to add sensor%d\n", i);
sysmon_envsys_destroy(sc->sc_sme);
return;
}
}
sc->sc_sme->sme_name = device_xname(dv);
sc->sc_sme->sme_cookie = dv;
sc->sc_sme->sme_refresh = acpibat_refresh;
sc->sc_sme->sme_class = SME_CLASS_BATTERY;
sc->sc_sme->sme_flags = SME_INIT_REFRESH;
sc->sc_updateinterval.tv_sec = 1;
sc->sc_updateinterval.tv_usec = 0;
if (sysmon_envsys_register(sc->sc_sme)) {
aprint_error_dev(dv, "unable to register with sysmon\n");
sysmon_envsys_destroy(sc->sc_sme);
}
}
static void
acpibat_refresh(struct sysmon_envsys *sme, envsys_data_t *edata)
{
device_t dv = sme->sme_cookie;
struct acpibat_softc *sc = device_private(dv);
if (ratecheck(&sc->sc_lastupdate, &sc->sc_updateinterval))
acpibat_update(dv);
}
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